Bridge highway test operation simulation device and performance test platform

Abstract

This invention provides a bridge and highway test operation simulation device and performance testing platform to solve the problem that existing bridge subgrade testing devices cannot fully simulate the impact of actual vehicles on subgrade performance. It includes a operation simulation device comprising a first track gear plate, a first bearing, a second bearing, a first sector plate, a second sector plate, a first toothed rail, a second toothed rail, and a running mechanism. The first sector plate is fixedly mounted on the outer wall of the first bearing, and the second sector plate is fixedly mounted on the outer wall of the second bearing. Both the first and second bearings are located above the first track gear plate. The central axes of the first track gear plate, the first bearing, the second bearing, the first toothed rail, and the second toothed rail are collinear. The running mechanism performs circular motion around the first track gear plate. This device can simulate both the impact of vehicles running side-by-side on the subgrade in a real road environment and the impact of vehicles running at different distances in front and behind on the subgrade in a real road environment.

Description

Technical Field

[0001] This invention belongs to the field of bridge subgrade performance testing technology, and in particular relates to a bridge highway test operation simulation device and performance testing platform. Background Technology

[0002] In recent years, with the rapid development of my country's transportation industry, the volume of vehicles has increased, their speeds have become higher, and their loads have become heavier, placing higher demands on the mechanical properties and stability of bridge and highway subgrades. New materials are now being applied in bridge and highway subgrade engineering. A variety of new materials are commonly used in bridge and highway subgrades. When conducting performance tests on bridge and highway subgrades, a common operating device is a single roller to simulate the effect. However, in reality, there are usually multiple lanes in the same direction, and a single roller cannot fully simulate the impact of actual vehicles on the bridge and highway subgrade. Specifically, it cannot simulate the impact of vehicles traveling side-by-side with the same load on the subgrade performance, nor can it simulate the impact of vehicles with the same or different loads on the same subgrade, leading to inaccurate test results. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a bridge and highway test operation simulation equipment performance test platform. This platform is used to solve the problem that the operating device in the prior art cannot fully simulate the impact of actual vehicles on the roadbed performance during bridge subgrade performance testing.

[0004] To achieve the above and other related objectives, the present invention provides a bridge-highway test operation simulation device, comprising:

[0005] The simulation device includes a first track gear disk, a first bearing, a second bearing, a first sector disk, a second sector disk, a first gear rail, a second gear rail, and a running mechanism. The first sector disk is fixedly installed on the outer wall of the first bearing, and the second sector disk is fixedly installed on the outer wall of the second bearing. The first bearing and the second bearing are both located above the first track gear disk. The central axes of the first track gear disk, the first bearing, the second bearing, the first gear rail, and the second gear rail are collinear. The running mechanism performs circular motion around the first track gear disk.

[0006] The operating mechanism includes a first rotating shaft rotatably mounted on the first sector disk, a first track gear coaxially fixedly engaged with one end of the first rotating shaft, a first bevel gear coaxially fixedly engaged with the other end of the first rotating shaft, an L-shaped bracket, a second rotating shaft rotatably engaged with the vertical portion of the L-shaped bracket, a second bevel gear coaxially fixedly engaged with one end of the second rotating shaft, several moving wheels arranged side by side and coaxially fixedly mounted on the second rotating shaft, two support gears symmetrically arranged on both sides of the several moving wheels, a driving component for driving the first rotating shaft to rotate, and a loading module for adjusting the pressure value of the moving wheels. The first track gear meshes with the first track gear disk, the first rotating shaft rotatably engages with the horizontal portion of the L-shaped bracket, the first bevel gear meshes with the second bevel gear and their rotation axes are perpendicular to each other, both support gears are coaxially fixedly engaged with the second rotating shaft, and the two support gears mesh with the first gear track and the second gear track, respectively.

[0007] Optionally, there are at least two operating mechanisms.

[0008] Optionally, a plurality of the motion wheels on the running mechanism are arranged with a first spacing and / or a second spacing.

[0009] Optionally, the operating drive includes a motor, which is wirelessly controlled.

[0010] Optionally, the loading module has two components, which are symmetrically arranged on both sides of the plurality of moving wheels. Each loading module includes a mounting base, a roller, two first fixed pulleys, a wire rope, a U-shaped frame, a second fixed pulley, a fixed frame, and a loading drive assembly for driving the roller to rotate. The roller has two rope grooves on its side wall. The roller is rotatably mounted in the mounting base. The fixed frame is mounted on a side wall of the roller parallel to the mounting base. The arc portion of the U-shaped frame is fitted onto the fixed frame to form a movable connection structure. The second fixed pulley is rotatably mounted in the U-shaped frame. The two first fixed pulleys are arranged side by side and rotatably mounted on the second rotating shaft. The roller is located below the first fixed pulleys. The central axis of the roller is parallel to the central axis of the second rotating shaft. The central axis of the second fixed pulley is perpendicular to the central axis of the roller. The wire rope is wound together on the two first fixed pulleys, the second fixed pulley, and the two rope grooves of the roller.

[0011] The mounting bases on the two loading modules are respectively fixedly installed above the first sector disk and the second sector disk.

[0012] Optionally, the loading drive assembly includes a drive housing, a drive telescopic component, a first drive shaft rotatably mounted on the drive housing, a second drive shaft rotatably mounted on the drive housing, a first drive gear coaxially and fixedly engaged with the first drive shaft, a second drive gear coaxially and fixedly engaged with the second drive shaft, and a rotating arm vertically and fixedly connected to the first drive shaft. The drive housing is fixedly mounted on one side of the mounting base, the second drive shaft is coaxially and fixedly connected to the roller, the drive telescopic component controls the rotation of the rotating arm, and the first drive gear meshes with the second drive gear for transmission.

[0013] Optionally, the drive telescopic component is a hydraulic rod, one end of which is hinged to the rotating arm, and the other end of which is hinged to a surface of the drive box parallel to the first drive shaft.

[0014] Optionally, the operating mechanism further includes a pressure sensor mounted on the second rotating shaft.

[0015] A performance testing platform, including the bridge and highway test operation simulation equipment described above;

[0016] It also includes a roadbed simulation mechanism, which includes a base, an annular roadbed seat, an annular slot, an annular roadbed, and a support base. The annular roadbed seat is fixedly installed above the base, the annular slot is fixedly installed inside the annular roadbed seat, the annular roadbed is installed inside the annular slot, and the support base is fixedly installed at the center position above the base. The annular slot is composed of multiple fan-shaped slots, and the annular roadbed is formed by splicing multiple fan-shaped roadbeds one by one. The central axes of the annular roadbed seat, the fan-shaped slot, and the fan-shaped roadbed are collinear.

[0017] The fan-shaped roadbed has multiple lanes, which are in contact with the moving wheel. The first track toothed disc and the first bearing are fixedly sleeved on the outer wall of the base, and the second bearing is fixedly sleeved on the outer wall of the support seat. The first toothed rail and the second toothed rail are coaxially fixedly installed above the inner and outer edges of the annular roadbed base with their teeth facing upwards.

[0018] Optionally, the roadbed simulation mechanism further includes a drainage ditch, a rotary map acquisition device, and multiple humidity sensors. The rotary map acquisition device is installed above the support base, and the multiple humidity sensors are buried at different depths in the fan-shaped roadbed. The drainage ditch is located between the annular slot and the annular roadbed base, and the drainage ditch is connected to the outside through a drainage pipe.

[0019] As described above, the bridge and highway test operation simulation equipment and performance test platform of the present invention have at least the following beneficial effects:

[0020] The first shaft is driven to rotate by a drive mechanism, which in turn rotates the first bevel gear and the first track gear. The first bevel gear meshes with the second bevel gear, which in turn drives the second shaft to rotate. Simultaneously, the first track gear and two support gears move in a circular motion on the first track gear plate, the first gear rail, and the second gear rail, respectively, allowing the running mechanism to continuously simulate vehicle operation. Several moving wheels are arranged side-by-side and coaxially, making the simulated vehicle operation closer to the actual road environment, increasing the reliability and practicality of the test results. It can also simulate the impact of vehicles running side-by-side on the roadbed in a real road environment. The circular motion of the running mechanism around the first track gear plate helps maintain the stability of the running mechanism, reduces wear on the moving wheels caused by centrifugal force, and extends the service life of the moving wheels. Attached Figure Description

[0021] Figure 1 The diagram shown is a three-dimensional structural schematic of a bridge and highway test operation simulation device according to the present invention.

[0022] Figure 2 The diagram shows a three-dimensional structural schematic of the loading module of a bridge and highway test operation simulation device according to the present invention.

[0023] Figure 3 The diagram shows a three-dimensional structural schematic of the loading drive component of a bridge and highway test operation simulation device according to the present invention.

[0024] Figure 4 The diagram shown is a three-dimensional structural schematic of a performance testing platform according to the present invention.

[0025] Component designation explanation

[0026] Roadbed simulation mechanism 1, base 11, ring roadbed base 12, ring slot 13, fan slot 131, ring roadbed 14, fan roadbed 141, lane 142, support base 15, drainage ditch 16, rotary map acquisition device 17.

[0027] The system includes: a simulation device 2, a first track gear 21, a first bearing 22, a second bearing 23, a first sector disk 24, a second sector disk 25, a first gear rail 26, a second gear rail 27, a running mechanism 28, and a pressure sensor 29.

[0028] First rotating shaft 281, first track gear 282, first bevel gear 283, L-shaped bracket 284, second rotating shaft 285, second bevel gear 286, moving wheel 287, support gear 288, running drive component 289, loading module 2810, mounting base 28101, roller 28102, first fixed pulley 28103, wire rope 28104, U-shaped frame 28105, second fixed pulley 28106, fixed frame 28107, loading drive assembly 28108, rope groove 28109, drive box 281081, drive telescopic component 281082, first drive rotating shaft 281083, second drive rotating shaft 281084, drive large gear 281085, drive small gear 281086, rotating arm 281087. Detailed Implementation

[0029] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0030] Please see Figures 1 to 4 It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0031] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0032] In this embodiment, please refer to Figures 1 to 3This invention provides a bridge and highway test operation simulation device, comprising: an operation simulation device 2, the operation simulation device 2 including a first track gear 21, a first bearing 22, a second bearing 23, a first sector disk 24, a second sector disk 25, a first gear rail 26, a second gear rail 27, and an operating mechanism 28. The first sector disk 24 is fixedly installed on the outer wall of the first bearing 22, and the second sector disk 25 is fixedly installed on the outer wall of the second bearing 23. The first bearing 22 and the second bearing 23 are both located above the first track gear 21. The central axes of the first track gear 21, the first bearing 22, the second bearing 23, the first gear rail 26, and the second gear rail 27 are collinear. The operating mechanism 28 performs circular motion around the first track gear 21. The operating mechanism 28 includes a first rotating shaft 281 rotatably installed on the first sector disk 24, a first track gear 282 coaxially fixedly engaged with one end of the first rotating shaft 281, and a gear 282 fixedly engaged with the first rotating shaft 281. The system includes a first bevel gear 283 coaxially fixedly fitted at one end, an L-shaped bracket 284, a second rotating shaft 285 rotatably fitted with the vertical portion of the L-shaped bracket 284, a second bevel gear 286 coaxially fixedly fitted with one end of the second rotating shaft 285, several moving wheels 287 arranged side by side and coaxially fixedly mounted on the second rotating shaft 285, two support gears 288 symmetrically arranged on both sides of the moving wheels 287, a running drive component that drives the first rotating shaft 281 to rotate, and a loading module 2810 that adjusts the pressure value of the moving wheels 287. The first track gear 282 meshes with the first track toothed disc 21 for transmission. The first rotating shaft 281 rotatably fits with the horizontal portion of the L-shaped bracket 284. The first bevel gear 283 meshes with the second bevel gear 286 for transmission, and their rotation axes are perpendicular to each other. Both support gears 288 are coaxially fixedly fitted with the second rotating shaft 285. The two support gears 288 mesh with the first toothed rail 26 and the second toothed rail 27 respectively for transmission.

[0033] The first rotating shaft 281 is driven by a drive component to rotate, which in turn drives the first bevel gear 283 and the first track gear 282 to rotate. The first bevel gear 283 meshes with the second bevel gear 286, which in turn drives the second rotating shaft 285 to rotate. The first track gear 282 and the two support gears 288 move in a circular motion on the first track gear plate 21, the first gear rail 26, and the second gear rail 27, respectively, enabling the running mechanism 28 to continuously simulate vehicle operation. Several moving wheels 287 are arranged side by side and coaxially, which makes the simulated vehicle operation closer to the actual road environment, increasing the credibility and practicality of the test results. It can also simulate the impact of vehicles running side by side on the roadbed in the actual road environment. The circular motion of the running mechanism 28 around the first track gear plate 21 helps to maintain the stability of the running mechanism 28, reduces the wear of the moving wheels 287 caused by centrifugal force, and extends the service life of the moving wheels 287.

[0034] In this embodiment, please refer to Figure 1 The operating mechanism 28 comprises at least two components. Having at least two operating mechanisms 28 allows the simulated vehicle operation to more closely resemble the actual road environment, increasing the reliability and practicality of the test results. It can also simulate the impact of vehicles moving in front and behind on the roadbed in a real road environment. The operating mechanisms 28 operate independently, making the spacing between them adjustable, thereby increasing the ability to study the impact of differences in front and behind spacing on roadbed performance during testing.

[0035] In this embodiment, please refer to Figure 1 The plurality of moving wheels 287 on the running mechanism 28 are arranged with a first spacing and / or a second spacing. The first spacing is smaller than the second spacing. The plurality of moving wheels 287 on the running mechanism 28 may all be arranged with the first spacing or all with the second spacing, or some may be arranged with the first spacing and others with the second spacing, so that the effect of different spacings on the roadbed can be analyzed during the test.

[0036] In this embodiment, please refer to Figure 1 The driving component includes a motor, which is wirelessly controlled. By using a wireless communication module to send control signals to the motor, its operation can be controlled, making motor control more flexible and convenient to operate.

[0037] In this embodiment, please refer to Figure 1 and Figure 2The loading module 2810 has two components, which are symmetrically arranged on both sides of the plurality of moving wheels 287. Each loading module 2810 includes a mounting base 28101, a roller 28102, two first fixed pulleys 28103, a wire rope 28104, a U-shaped frame 28105, a second fixed pulley 28106, a fixed frame 28107, and a loading drive assembly 28108 for driving the roller 28102 to rotate. The roller 28102 has two rope grooves 28109 on its side wall. The roller 28102 is rotatably mounted within the mounting base 28101. The fixed frame 28107 is mounted on a side wall of the roller 28102 parallel to the central axis of the mounting base 28101. The curved portion of the U-shaped frame 28105 is fitted onto the fixed frame 28107. A movable connection structure is formed, with the second fixed pulley 28106 rotatably mounted inside the U-shaped frame 28105, and the two first fixed pulleys 28103 side by side and rotatably mounted on the second rotating shaft 285. The roller 28102 is located below the first fixed pulleys 28103, and the central axis of the roller 28102 is parallel to the central axis of the second rotating shaft 285. The central axes of the second fixed pulley 28106 and the roller 28102 are perpendicular. The wire rope 28104 is wound together on the two first fixed pulleys 28103, the second fixed pulley 28106, and the two rope grooves 28109 of the roller 28102. The mounting seats 28101 on the two loading modules 2810 are respectively fixedly mounted above the first sector disk 24 and the second sector disk 25. By simultaneously driving the loading drive components 28108 on both loading modules 2810 to rotate the roller 28102, the wire rope 28104 can be tensioned or loosened. This allows for balanced loading and unloading on both sides of the second rotating shaft 285, thus solving the problem of significant differences in repeated test results under the same conditions. Two fixed pulleys balance the force on the wire rope 28104, improving its load-bearing capacity.

[0038] In this embodiment, please refer to Figure 3The loading drive assembly 28108 includes a drive housing 281081, a drive telescopic member 281082, a first drive shaft 281083 rotatably mounted on the drive housing 281081, a second drive shaft 281084 rotatably mounted on the drive housing 281081, a first drive gear coaxially and fixedly engaged with the first drive shaft 281083, a second drive gear coaxially and fixedly engaged with the second drive shaft 281084, and a rotating arm 281087 vertically and fixedly connected to the first drive shaft 281083. The drive housing 281081 is fixedly mounted on one side of the mounting base 28101. The second drive shaft 281084 is coaxially and fixedly connected to the roller 28102. The drive telescopic member 281082 controls the rotation of the rotating arm 281087. The first drive gear meshes with the second drive gear for transmission. The extension and retraction of the telescopic component 281082 drives the rotating arm 281087 to move up or down, which in turn drives the first drive shaft 281083 to rotate forward or backward. This, in turn, drives the large drive gear 281085, which is coaxially fixedly fitted on the first drive shaft 281083, to rotate. The large drive gear 281085 and the small drive gear 281086 mesh and transmit power, which in turn drives the second drive shaft 281084, which is coaxially fixedly fitted, to rotate. This causes the roller 28102, which is coaxially fixedly connected, to rotate, allowing the wire rope 28104 to be tightened or loosened. Through the meshing transmission of the large drive gear 281085 and the small drive gear 281086, the transmission process is characterized by high precision, good stability, and accurate transmission ratio.

[0039] In this embodiment, please refer to Figure 3 The driving telescopic component 281082 is a hydraulic rod. One end of the hydraulic rod is hinged to the rotating arm 281087, and the other end is hinged to a surface of the drive housing 281081 parallel to the first drive shaft 281083. The driving telescopic component 281082 is a hydraulic rod, with one end hinged to the rotating arm 281087, and the other end hinged to one of the top, bottom, or two side surfaces of the drive housing 281081 parallel to the central axis of the first drive shaft 281083. The hydraulic rod exhibits good stability and strong load-bearing capacity during telescopic movement.

[0040] In this embodiment, please refer to Figure 1 The operating mechanism 28 also includes a pressure sensor 29, which is mounted on the second rotating shaft 285. The pressure sensor 29 mounted on the second rotating shaft 285 can monitor the pressure value of the loading mechanism on the roadbed in real time.

[0041] In this embodiment, please refer to Figure 4 A performance testing platform, comprising the bridge and highway test operation simulation equipment described in any of the above embodiments;

[0042] It also includes a roadbed simulation mechanism 1, which comprises a base 11, a ring-shaped roadbed base 12, a ring-shaped slot 13, a ring-shaped roadbed 14, and a support base 15. The ring-shaped roadbed base 12 is fixedly installed above the base 11, the ring-shaped slot 13 is fixedly installed inside the ring-shaped roadbed base 12, the ring-shaped roadbed 14 is installed inside the ring-shaped slot 13, and the support base 15 is fixedly installed at the center position above the base 11. The ring-shaped slot 13 is composed of multiple fan-shaped slots 131, and the ring-shaped roadbed 14 is formed by splicing multiple fan-shaped roadbeds 141 one by one. The fan-shaped roadbeds 141 can be set as a horizontal roadbed or a sloped roadbed according to the test purpose and requirements. The roadbed is used to simulate specific terrain conditions. The central axes of the annular roadbed base 12, the fan-shaped slot 131, and the fan-shaped roadbed 141 are collinear. Multiple lanes 142 are provided on the fan-shaped roadbed 141. The lanes 142 are in contact with the moving wheels 287. According to the test requirements, one or more moving wheels can be set on one lane 142. The first track toothed disc 21 and the first bearing 22 are both fixedly sleeved on the outer wall of the base 11. The second bearing 23 is fixedly sleeved on the outer wall of the support base 15. The first toothed rail 26 and the second toothed rail 27 are coaxially fixedly installed above the inner and outer edges of the annular roadbed base 12 with the teeth facing upward. The fan-shaped roadbed 141 is made of a mixture, which is mainly composed of soil, rubble and boulders. Some also contain fly ash, slag and civil engineering materials. Because the mixture is made of different materials, it has different properties. The ring roadbed 14 is composed of multiple fan-shaped roadbeds 141 spliced ​​together, which allows for the observation and performance comparison of different roadbed mixtures under the same spatial and temporal conditions during the test, thereby greatly shortening the test cycle.

[0043] In this embodiment, please refer to Figure 4 The roadbed simulation mechanism 1 also includes a drainage ditch 16, a rotary map acquisition device 17, and multiple humidity sensors. The rotary map acquisition device 17 is mounted above the support base 15. The multiple humidity sensors are buried at different depths in the fan-shaped roadbed 141. The drainage ditch 16 is located between the annular groove 13 and the annular roadbed base 12, and is connected to the outside via a drainage pipe. By burying humidity sensors at different depths in the fan-shaped roadbed 141, humidity changes at different depths can be monitored, and the relationship between roadbed humidity and other properties can be studied. The rotary map acquisition device 17 can collect data on the settlement of the fan-shaped roadbed 141. The drainage ditch 16 between the annular groove 13 and the annular roadbed base 12 is connected to the outside via a drainage pipe, which can effectively prevent water accumulation.

[0044] Working principle: During the test, a ring roadbed 14 is formed by pouring the fan-shaped roadbed 141 into the fan-shaped slot 131. There are at least two moving mechanisms, which can simulate the influence of vehicles running in front and behind on the roadbed in the actual road environment 142. The moving mechanisms 28 operate independently, and the spacing between the moving mechanisms 28 is adjustable, thereby increasing the study of the influence of the difference in front and behind spacing on the roadbed performance during the test. The first shaft 281 is rotated by the driving component, which in turn rotates the first bevel gear 283 and the first track gear 282. The first bevel gear 283 meshes with the second bevel gear 286, which in turn drives the second shaft 285 to rotate. The first track gear 282 and the two support gears 288 move in a circular motion on the first track gear plate 21, the first gear rail 26, and the second gear rail 27, respectively. This drives the moving wheels 287, which are in contact with the road 142 on the fan-shaped roadbed 141. Several moving wheels 287 are arranged side by side and coaxially, which makes the simulated vehicle operation closer to the actual road 142 environment, increasing the credibility and practicality of the test results. It can also simulate the impact of vehicles running side by side on the roadbed in the actual road 142 environment. The circular motion of the running mechanism 28 around the first track gear plate 21 helps to maintain the stability of the running mechanism 28, reduces the wear of the moving wheels 287 caused by centrifugal force, and extends the service life of the moving wheels 287.

[0045] In summary, this invention drives the first rotating shaft 281 to rotate via a driving component, which in turn rotates the first bevel gear 283 and the first track gear 282. The first bevel gear 283 meshes with the second bevel gear 286, which in turn drives the second rotating shaft 285 to rotate. Simultaneously, the first track gear 282 and the two support gears 288 move in a circular motion on the first track gear plate 21, the first gear rail 26, and the second gear rail 27, respectively, enabling the running mechanism 28 to continuously simulate vehicle operation. The parallel and coaxial arrangement of several moving wheels 287 allows the simulated vehicle operation to more closely resemble the actual road environment 142, increasing the reliability and practicality of the test results. It can also simulate the impact of vehicles running side-by-side on the roadbed in the actual road environment 142. The circular motion of the running mechanism 28 around the first track gear plate 21 helps maintain the stability of the running mechanism 28, reduces wear on the moving wheels 287 caused by centrifugal force, and extends the service life of the moving wheels 287. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0046] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A bridge and highway test operation simulation device, characterized in that, include: The simulation device includes a first track gear disk, a first bearing, a second bearing, a first sector disk, a second sector disk, a first gear rail, a second gear rail, and a running mechanism. The first sector disk is fixedly installed on the outer wall of the first bearing, and the second sector disk is fixedly installed on the outer wall of the second bearing. The first bearing and the second bearing are both located above the first track gear disk. The central axes of the first track gear disk, the first bearing, the second bearing, the first gear rail, and the second gear rail are collinear. The running mechanism performs circular motion around the first track gear disk. The operating mechanism includes a first rotating shaft rotatably mounted on the first sector disk, a first track gear coaxially fixedly engaged with one end of the first rotating shaft, a first bevel gear coaxially fixedly engaged with the other end of the first rotating shaft, an L-shaped bracket, a second rotating shaft rotatably engaged with the vertical portion of the L-shaped bracket, a second bevel gear coaxially fixedly engaged with one end of the second rotating shaft, several moving wheels arranged side by side and coaxially fixedly mounted on the second rotating shaft, two support gears symmetrically arranged on both sides of the several moving wheels, a driving component for driving the first rotating shaft to rotate, and a loading module for adjusting the pressure value of the moving wheels. The first track gear meshes with the first track gear disk, the first rotating shaft rotatably engages with the horizontal portion of the L-shaped bracket, the first bevel gear meshes with the second bevel gear and their rotation axes are perpendicular to each other, both support gears are coaxially fixedly engaged with the second rotating shaft, and the two support gears mesh with the first gear track and the second gear track, respectively.

2. The bridge and highway test operation simulation equipment according to claim 1, characterized in that: The operating mechanism has at least two parts.

3. The bridge and highway test operation simulation equipment according to claim 1, characterized in that: The plurality of the moving wheels on the running mechanism are arranged at a first spacing and / or a second spacing.

4. The bridge and highway test operation simulation equipment according to claim 1, characterized in that: The driving component includes a motor, which is wirelessly controlled.

5. The bridge and highway test operation simulation equipment according to claim 1, characterized in that: The loading module has two components, which are symmetrically arranged on both sides of several moving wheels. Each loading module includes a mounting base, a roller, two first fixed pulleys, a steel wire rope, a U-shaped frame, a second fixed pulley, a fixed frame, and a loading drive assembly for driving the roller to rotate. The roller has two rope grooves on its side wall. The roller is rotatably mounted in the mounting base. The fixed frame is mounted on a side wall of the roller parallel to the mounting base. The arc portion of the U-shaped frame is fitted onto the fixed frame to form a movable connection structure. The second fixed pulley is rotatably mounted in the U-shaped frame. The two first fixed pulleys are arranged side by side and rotatably mounted on the second rotating shaft. The roller is located below the first fixed pulleys. The central axis of the roller is parallel to the central axis of the second rotating shaft. The central axis of the second fixed pulley is perpendicular to the central axis of the roller. The steel wire rope is wound around the two first fixed pulleys, the second fixed pulley, and the two rope grooves of the roller. The mounting bases on the two loading modules are respectively fixedly installed above the first sector disk and the second sector disk.

6. The bridge and highway test operation simulation equipment according to claim 5, characterized in that: The loading drive assembly includes a drive housing, a drive telescopic component, a first drive shaft rotatably mounted on the drive housing, a second drive shaft rotatably mounted on the drive housing, a first drive gear coaxially and fixedly engaged with the first drive shaft, a second drive gear coaxially and fixedly engaged with the second drive shaft, and a rotating arm vertically and fixedly connected to the first drive shaft. The drive housing is fixedly mounted on one side of the mounting base, the second drive shaft is coaxially and fixedly connected to the roller, the drive telescopic component controls the rotation of the rotating arm, and the first drive gear meshes with the second drive gear for transmission.

7. The bridge and highway test operation simulation equipment according to claim 6, characterized in that: The drive telescopic component is a hydraulic rod, one end of which is hinged to the rotating arm, and the other end of which is hinged to a surface of the drive box that is parallel to the first drive shaft.

8. The bridge and highway test operation simulation equipment according to claim 1, characterized in that: The operating mechanism also includes a pressure sensor, which is mounted on the second rotating shaft.

9. A performance testing platform, characterized in that: Includes the bridge-highway test operation simulation equipment as described in any one of claims 1-8; It also includes a roadbed simulation mechanism, which includes a base, an annular roadbed seat, an annular slot, an annular roadbed, and a support base. The annular roadbed seat is fixedly installed above the base, the annular slot is fixedly installed inside the annular roadbed seat, the annular roadbed is installed inside the annular slot, and the support base is fixedly installed at the center position above the base. The annular slot is composed of multiple fan-shaped slots, and the annular roadbed is formed by splicing multiple fan-shaped roadbeds one by one. The central axes of the annular roadbed seat, the fan-shaped slot, and the fan-shaped roadbed are collinear. The fan-shaped roadbed has multiple lanes, which are in contact with the moving wheel. The first track toothed disc and the first bearing are fixedly sleeved on the outer wall of the base, and the second bearing is fixedly sleeved on the outer wall of the support seat. The first toothed track and the second toothed track are coaxially fixedly installed above the inner and outer edges of the annular roadbed base with their teeth facing upwards.

10. The performance testing platform according to claim 9, characterized in that: The roadbed simulation mechanism also includes a drainage ditch, a rotary map acquisition device, and multiple humidity sensors. The rotary map acquisition device is installed above the support base, and the multiple humidity sensors are buried at different depths in the fan-shaped roadbed. The drainage ditch is located between the annular slot and the annular roadbed base, and the drainage ditch is connected to the outside through a drainage pipe.

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